Keysight (formerly Agilent T&M) 37201A HP-IB Extender

The HP 37201A HP-IB bus extender can be used to increase operating distances between instruments on a bus system. For example, up to 15 instruments can be connected on a local bus system, such as that of the 71600B series of Gbit/s testers. However, the cable length between instruments should be less than two meters, and the total cabling should not exceed 20 meters.

For distances of up to 1000 m, the 37201A bus extender can be used. Two bus extenders are needed, one at the local bus and one at the remote bus. For distances beyond 1000 m, two 37201A bus extenders with suitable modems must be used.

Similarly, the 37201A can be used with the OmniBER 719 or 720. The total length of cable must not exceed two meters x the number of instruments in the system. The total length of cable used to interconnect all devices in the system must not exceed 20 meters. For distances exceeding 1250 meters, two 37201A extenders and two suitable modems can be used.